My IP is unchangeable!

[TheUnreal]

I tried everything. My IP is unchangeable!
I'm using windows7, Router that connected to 2 computer with cable.
Tried to re-start the router,and any guide I found in the internet. [ipconfig too]
Somone have any idea?!
Thanks anyway.

[AboveTheLogic]

sometimes you have to go as far as MAC Address spoofing:

http://en.wikipedia.org/wiki/MAC_spoofing

in your case, the MAC of the router might need to be changed

might be easier to use your own router if you are using an ISP supplied one, I think its typical for a retail router to allow you to change the MAC easily

[clanmills]

I agree with "Above". Almost all routers and modems have something in their control panel to enable you to change the MAC address.

So disconnect your modem from the phone line. Change the MAC address on the modem. Reboot everything and connect the phone. Your ISP will almost certainly issue a new IP address.

If your modem is in 'bridge' mode - change the MAC address of your router.

The point is - your ISP recognises you the MAC address that is visible to him and keeps issuing the same IP. When you 'change your spots', he will not recognise you and issue a different IP address.

Here's a script to generate a new Mac address:
http://centos.org/docs/5/html/5.2/Vi...C_address.html

#!/usr/bin/python
# -*- coding: utf-8 -*-
# http://centos.org/docs/5/html/5.2/Vi...C_address.html
# macgen.py script to generate a MAC address for Red Hat Virtualization guests
#
import random
#
def randomMAC():
	mac = [ 0x00, 0x16, 0x3e,
		random.randint(0x00, 0x7f),
		random.randint(0x00, 0xff),
		random.randint(0x00, 0xff) ]
	return ':'.join(map(lambda x: "%02x" % x, mac))
#
print randomMAC()

I've run it a few times to give you some new unique mac addresses.

509 /home/rmills/bin> for i in 1 2 3 4 5 6 7 8; do ./macgen.py ; done
00:16:3e:34:4b:d8
00:16:3e:0b:94:ca
00:16:3e:63:7b:e6
00:16:3e:5c:d9:96
00:16:3e:57:98:fe
00:16:3e:76:e5:93
00:16:3e:69:b1:8f
00:16:3e:37:52:e7
510 /home/rmills/bin>

[AboveTheLogic]

hmm that's an interesting script, I would normally just change some letters randomly, as long as they are between 0 and F

[clanmills]

Hi 'Above'

I haven't studied the script. I googled it, pasted and ran it. It appears to work - I can't say anything about how well it works.

However I'd like to point out that MAC addresses should be globally unique. So randomly changing one byte may be (and is probably not) unique. Mind you, it probably doesn't matter if the address is not globally unique, it only has to be unique within the context in which it is respected. So a large ISP/DHCP server may be interested in a few million MAC addresses. The 6 byte MAC address space is about 65000 * 3000 * million = 200 * million * million. Rather a lot.

A GUID (Globally Unique IDentifier) is 128 bytes which I believe is of the order of the number of atoms in the universe. As Prince Charles once famously said of Canarie Wharf (London's Tallest Building) "Why does it have to be so big?". And I think the answer is: "A GUID has to unique." Indisputably under all circumstances and all domains. It's unique. Period. If you randomly change bytes in a GUID you cannot guarantee uniqueness. QED.

I wonder if this python code really does generate unique numbers. It calls random() several time. random() is notorious for producing identical results and is NOT random!

For sure this script knows nothing about existing MAC addresses.

Bottom line:
1) this script is probably better than just changing digits in a MAC address.
2) this script cannot generate a globally unique MAC address.
3) this script could be generating the same 'unique' addresses wherever it is run. Reliable unique identical MAC addresss = useless.

Robin

[AboveTheLogic]

Originally Posted by clanmills

For sure this script knows nothing about existing MAC addresses.

...which is exactly why I think my method may just be as reliable as the script

[clanmills]

'Above' - you are right.

My long-winded explanation results in the same conclusion.

[TheUnreal]

Originally Posted by clanmills

I agree with "Above". Almost all routers and modems have something in their control panel to enable you to change the MAC address.

So disconnect your modem from the phone line. Change the MAC address on the modem. Reboot everything and connect the phone. Your ISP will almost certainly issue a new IP address.

If your modem is in 'bridge' mode - change the MAC address of your router.

The point is - your ISP recognises you the MAC address that is visible to him and keeps issuing the same IP. When you 'change your spots', he will not recognise you and issue a different IP address.

Here's a script to generate a new Mac address:
http://centos.org/docs/5/html/5.2/Vi...C_address.html

#!/usr/bin/python
# -*- coding: utf-8 -*-
# http://centos.org/docs/5/html/5.2/Vi...C_address.html
# macgen.py script to generate a MAC address for Red Hat Virtualization guests
#
import random
#
def randomMAC():
	mac = [ 0x00, 0x16, 0x3e,
		random.randint(0x00, 0x7f),
		random.randint(0x00, 0xff),
		random.randint(0x00, 0xff) ]
	return ':'.join(map(lambda x: "%02x" % x, mac))
#
print randomMAC()

I've run it a few times to give you some new unique mac addresses.

509 /home/rmills/bin> for i in 1 2 3 4 5 6 7 8; do ./macgen.py ; done
00:16:3e:34:4b:d8
00:16:3e:0b:94:ca
00:16:3e:63:7b:e6
00:16:3e:5c:d9:96
00:16:3e:57:98:fe
00:16:3e:76:e5:93
00:16:3e:69:b1:8f
00:16:3e:37:52:e7
510 /home/rmills/bin>

Thanks for your help but Im little comfused :S
I found somthing about what u talked on my rauter setting but don't know what to put there and what to change

http://i49.tinypic.com/r1fonm.png

[clanmills]

Thanks for including the image. That helps a lot.

Try changing one of the bytes in the MAC. For example, change WAN MAC Address: bla.dee.bla...83 to ...84 and hit SAVE.

Robin

[TheUnreal]

Originally Posted by clanmills

Thanks for including the image. That helps a lot.

Try changing one of the bytes in the MAC. For example, change WAN MAC Address: bla.dee.bla...83 to ...84 and hit SAVE.

Robin

My internet stopped to work.

[clanmills]

Well, reset it and make sure it's working again. Then try changing some of other bytes (one at a time). How many different settings have you tried?

Robin

[systemslave]

The script generates three static hex numbers followed by three random hex numbers. The static numbers are from a block assigned to Xensource. The random number are just that, random.

[AboveTheLogic]

Originally Posted by TheUnreal

My internet stopped to work.

power cycle everything - modem first, wait a minute, then power on the router, you might get back up with a new IP at that point

[TheUnreal]

omg
my ip changed
I LOVE YOU!!!!!!!!!!!!!!

[wimiadmin]

Originally Posted by TheUnreal

I LOVE YOU!!!!!!!!!!!!!!

This isn't a dating site. LOL! Just kidding. Glad it worked for you.

[AboveTheLogic]

lol, do we have a donate button? love has to be worth a buck or two!

just kidding

I'm glad it worked out for you.